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FFmpeg/libavcodec/mpegvideo.h
Anton Khirnov ebfe622bb1 mpegvideo: drop support for real (non-emulated) edges 
Several decoders disable those anyway and they are not measurably faster
on x86. They might be somewhat faster on other platforms due to missing
emu edge SIMD, but the gain is not large enough (and those decoders
relevant enough) to justify the added complexity.
2014-01-09 09:41:19 +01:00

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/*
* Generic DCT based hybrid video encoder
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* mpegvideo header.
*/
#ifndef AVCODEC_MPEGVIDEO_H
#define AVCODEC_MPEGVIDEO_H
#include "avcodec.h"
#include "dsputil.h"
#include "error_resilience.h"
#include "get_bits.h"
#include "h263dsp.h"
#include "hpeldsp.h"
#include "put_bits.h"
#include "ratecontrol.h"
#include "parser.h"
#include "mpeg12data.h"
#include "rl.h"
#include "thread.h"
#include "videodsp.h"
#include "libavutil/opt.h"
#define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
enum OutputFormat {
FMT_MPEG1,
FMT_H261,
FMT_H263,
FMT_MJPEG,
};
#define MPEG_BUF_SIZE (16 * 1024)
#define QMAT_SHIFT_MMX 16
#define QMAT_SHIFT 22
#define MAX_FCODE 7
#define MAX_MV 2048
#define MAX_THREADS 16
#define MAX_PICTURE_COUNT 32
#define MAX_B_FRAMES 16
#define ME_MAP_SIZE 64
#define ME_MAP_SHIFT 3
#define ME_MAP_MV_BITS 11
#define MAX_MB_BYTES (30*16*16*3/8 + 120)
#define INPLACE_OFFSET 16
/* Start codes. */
#define SEQ_END_CODE 0x000001b7
#define SEQ_START_CODE 0x000001b3
#define GOP_START_CODE 0x000001b8
#define PICTURE_START_CODE 0x00000100
#define SLICE_MIN_START_CODE 0x00000101
#define SLICE_MAX_START_CODE 0x000001af
#define EXT_START_CODE 0x000001b5
#define USER_START_CODE 0x000001b2
/**
* Value of Picture.reference when Picture is not a reference picture, but
* is held for delayed output.
*/
#define DELAYED_PIC_REF 4
struct MpegEncContext;
/**
* Picture.
*/
typedef struct Picture{
struct AVFrame f;
ThreadFrame tf;
AVBufferRef *qscale_table_buf;
int8_t *qscale_table;
AVBufferRef *motion_val_buf[2];
int16_t (*motion_val[2])[2];
AVBufferRef *mb_type_buf;
uint32_t *mb_type;
#if !FF_API_MB_TYPE
#define MB_TYPE_INTRA4x4 0x0001
#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific
#define MB_TYPE_INTRA_PCM 0x0004 //FIXME H.264-specific
#define MB_TYPE_16x16 0x0008
#define MB_TYPE_16x8 0x0010
#define MB_TYPE_8x16 0x0020
#define MB_TYPE_8x8 0x0040
#define MB_TYPE_INTERLACED 0x0080
#define MB_TYPE_DIRECT2 0x0100 //FIXME
#define MB_TYPE_ACPRED 0x0200
#define MB_TYPE_GMC 0x0400
#define MB_TYPE_SKIP 0x0800
#define MB_TYPE_P0L0 0x1000
#define MB_TYPE_P1L0 0x2000
#define MB_TYPE_P0L1 0x4000
#define MB_TYPE_P1L1 0x8000
#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
#define MB_TYPE_QUANT 0x00010000
#define MB_TYPE_CBP 0x00020000
#endif
AVBufferRef *mbskip_table_buf;
uint8_t *mbskip_table;
AVBufferRef *ref_index_buf[2];
int8_t *ref_index[2];
AVBufferRef *mb_var_buf;
uint16_t *mb_var; ///< Table for MB variances
AVBufferRef *mc_mb_var_buf;
uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
AVBufferRef *mb_mean_buf;
uint8_t *mb_mean; ///< Table for MB luminance
AVBufferRef *hwaccel_priv_buf;
/**
* hardware accelerator private data
*/
void *hwaccel_picture_private;
#define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type
#define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
#define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
#define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
#define IS_INTRA(a) ((a)&7)
#define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
#define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
#define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
#define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
#define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
#define IS_GMC(a) ((a)&MB_TYPE_GMC)
#define IS_16X16(a) ((a)&MB_TYPE_16x16)
#define IS_16X8(a) ((a)&MB_TYPE_16x8)
#define IS_8X16(a) ((a)&MB_TYPE_8x16)
#define IS_8X8(a) ((a)&MB_TYPE_8x8)
#define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
#define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
#define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
#define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
#define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
#define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
#define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note does not work if subMBs
#define HAS_CBP(a) ((a)&MB_TYPE_CBP)
int field_poc[2]; ///< h264 top/bottom POC
int poc; ///< h264 frame POC
int frame_num; ///< h264 frame_num (raw frame_num from slice header)
int mmco_reset; ///< h264 MMCO_RESET set this 1. Reordering code must not mix pictures before and after MMCO_RESET.
int pic_id; /**< h264 pic_num (short -> no wrap version of pic_num,
pic_num & max_pic_num; long -> long_pic_num) */
int long_ref; ///< 1->long term reference 0->short term reference
int ref_poc[2][2][32]; ///< h264 POCs of the frames used as reference (FIXME need per slice)
int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice)
int mbaff; ///< h264 1 -> MBAFF frame 0-> not MBAFF
int field_picture; ///< whether or not the picture was encoded in separate fields
int mb_var_sum; ///< sum of MB variance for current frame
int mc_mb_var_sum; ///< motion compensated MB variance for current frame
int b_frame_score; /* */
int needs_realloc; ///< Picture needs to be reallocated (eg due to a frame size change)
int reference;
int shared;
int recovered; ///< Picture at IDR or recovery point + recovery count
} Picture;
/**
* Motion estimation context.
*/
typedef struct MotionEstContext{
AVCodecContext *avctx;
int skip; ///< set if ME is skipped for the current MB
int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME
int direct_basis_mv[4][2];
uint8_t *scratchpad; ///< data area for the ME algo, so that the ME does not need to malloc/free
uint8_t *best_mb;
uint8_t *temp_mb[2];
uint8_t *temp;
int best_bits;
uint32_t *map; ///< map to avoid duplicate evaluations
uint32_t *score_map; ///< map to store the scores
unsigned map_generation;
int pre_penalty_factor;
int penalty_factor; /**< an estimate of the bits required to
code a given mv value, e.g. (1,0) takes
more bits than (0,0). We have to
estimate whether any reduction in
residual is worth the extra bits. */
int sub_penalty_factor;
int mb_penalty_factor;
int flags;
int sub_flags;
int mb_flags;
int pre_pass; ///< = 1 for the pre pass
int dia_size;
int xmin;
int xmax;
int ymin;
int ymax;
int pred_x;
int pred_y;
uint8_t *src[4][4];
uint8_t *ref[4][4];
int stride;
int uvstride;
/* temp variables for picture complexity calculation */
int mc_mb_var_sum_temp;
int mb_var_sum_temp;
int scene_change_score;
/* cmp, chroma_cmp;*/
op_pixels_func (*hpel_put)[4];
op_pixels_func (*hpel_avg)[4];
qpel_mc_func (*qpel_put)[16];
qpel_mc_func (*qpel_avg)[16];
uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
uint8_t *current_mv_penalty;
int (*sub_motion_search)(struct MpegEncContext * s,
int *mx_ptr, int *my_ptr, int dmin,
int src_index, int ref_index,
int size, int h);
}MotionEstContext;
/**
* MpegEncContext.
*/
typedef struct MpegEncContext {
AVClass *class;
struct AVCodecContext *avctx;
/* the following parameters must be initialized before encoding */
int width, height;///< picture size. must be a multiple of 16
int gop_size;
int intra_only; ///< if true, only intra pictures are generated
int bit_rate; ///< wanted bit rate
enum OutputFormat out_format; ///< output format
int h263_pred; ///< use mpeg4/h263 ac/dc predictions
int pb_frame; ///< PB frame mode (0 = none, 1 = base, 2 = improved)
/* the following codec id fields are deprecated in favor of codec_id */
int h263_plus; ///< h263 plus headers
int h263_flv; ///< use flv h263 header
enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
int fixed_qscale; ///< fixed qscale if non zero
int encoding; ///< true if we are encoding (vs decoding)
int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
int flags2; ///< AVCodecContext.flags2
int max_b_frames; ///< max number of b-frames for encoding
int luma_elim_threshold;
int chroma_elim_threshold;
int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
int stream_codec_tag; ///< internal stream_codec_tag upper case converted from avctx stream_codec_tag
/* the following fields are managed internally by the encoder */
/* sequence parameters */
int context_initialized;
int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
int picture_number; //FIXME remove, unclear definition
int picture_in_gop_number; ///< 0-> first pic in gop, ...
int mb_width, mb_height; ///< number of MBs horizontally & vertically
int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
int mb_num; ///< number of MBs of a picture
ptrdiff_t linesize; ///< line size, in bytes, may be different from width
ptrdiff_t uvlinesize; ///< line size, for chroma in bytes, may be different from width
Picture *picture; ///< main picture buffer
Picture **input_picture; ///< next pictures on display order for encoding
Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
int y_dc_scale, c_dc_scale;
int ac_pred;
int block_last_index[12]; ///< last non zero coefficient in block
int h263_aic; ///< Advanded INTRA Coding (AIC)
/* scantables */
ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
ScanTable intra_scantable;
ScanTable intra_h_scantable;
ScanTable intra_v_scantable;
/* WARNING: changes above this line require updates to hardcoded
* offsets used in asm. */
int64_t user_specified_pts; ///< last non-zero pts from AVFrame which was passed into avcodec_encode_video2()
/**
* pts difference between the first and second input frame, used for
* calculating dts of the first frame when there's a delay */
int64_t dts_delta;
/**
* reordered pts to be used as dts for the next output frame when there's
* a delay */
int64_t reordered_pts;
/** bit output */
PutBitContext pb;
int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
struct MpegEncContext *thread_context[MAX_THREADS];
int slice_context_count; ///< number of used thread_contexts
/**
* copy of the previous picture structure.
* note, linesize & data, might not match the previous picture (for field pictures)
*/
Picture last_picture;
/**
* copy of the next picture structure.
* note, linesize & data, might not match the next picture (for field pictures)
*/
Picture next_picture;
/**
* copy of the source picture structure for encoding.
* note, linesize & data, might not match the source picture (for field pictures)
*/
Picture new_picture;
/**
* copy of the current picture structure.
* note, linesize & data, might not match the current picture (for field pictures)
*/
Picture current_picture; ///< buffer to store the decompressed current picture
Picture *last_picture_ptr; ///< pointer to the previous picture.
Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
Picture *current_picture_ptr; ///< pointer to the current picture
int last_dc[3]; ///< last DC values for MPEG1
int16_t *dc_val_base;
int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
uint8_t *coded_block_base;
uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
int16_t (*ac_val_base)[16];
int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
int mb_skipped; ///< MUST BE SET only during DECODING
uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
and used for b-frame encoding & decoding (contains skip table of next P Frame) */
uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data
uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
uint8_t *obmc_scratchpad;
uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
int qscale; ///< QP
int chroma_qscale; ///< chroma QP
unsigned int lambda; ///< lagrange multipler used in rate distortion
unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
int *lambda_table;
int adaptive_quant; ///< use adaptive quantization
int dquant; ///< qscale difference to prev qscale
int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
int last_pict_type; //FIXME removes
int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
int droppable;
int frame_rate_index;
int last_lambda_for[5]; ///< last lambda for a specific pict type
int skipdct; ///< skip dct and code zero residual
/* motion compensation */
int unrestricted_mv; ///< mv can point outside of the coded picture
int h263_long_vectors; ///< use horrible h263v1 long vector mode
DSPContext dsp; ///< pointers for accelerated dsp functions
HpelDSPContext hdsp;
VideoDSPContext vdsp;
H263DSPContext h263dsp;
int f_code; ///< forward MV resolution
int b_code; ///< backward MV resolution for B Frames (mpeg4)
int16_t (*p_mv_table_base)[2];
int16_t (*b_forw_mv_table_base)[2];
int16_t (*b_back_mv_table_base)[2];
int16_t (*b_bidir_forw_mv_table_base)[2];
int16_t (*b_bidir_back_mv_table_base)[2];
int16_t (*b_direct_mv_table_base)[2];
int16_t (*p_field_mv_table_base[2][2])[2];
int16_t (*b_field_mv_table_base[2][2][2])[2];
int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
uint8_t (*p_field_select_table[2]);
uint8_t (*b_field_select_table[2][2]);
int me_method; ///< ME algorithm
int mv_dir;
#define MV_DIR_FORWARD 1
#define MV_DIR_BACKWARD 2
#define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
int mv_type;
#define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
#define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
#define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
#define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
#define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
/**motion vectors for a macroblock
first coordinate : 0 = forward 1 = backward
second " : depend on type
third " : 0 = x, 1 = y
*/
int mv[2][4][2];
int field_select[2][2];
int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
uint8_t *fcode_tab; ///< smallest fcode needed for each MV
int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
MotionEstContext me;
int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
for b-frames rounding mode is always 0 */
/* macroblock layer */
int mb_x, mb_y;
int mb_skip_run;
int mb_intra;
uint16_t *mb_type; ///< Table for candidate MB types for encoding
#define CANDIDATE_MB_TYPE_INTRA 0x01
#define CANDIDATE_MB_TYPE_INTER 0x02
#define CANDIDATE_MB_TYPE_INTER4V 0x04
#define CANDIDATE_MB_TYPE_SKIPPED 0x08
//#define MB_TYPE_GMC 0x10
#define CANDIDATE_MB_TYPE_DIRECT 0x10
#define CANDIDATE_MB_TYPE_FORWARD 0x20
#define CANDIDATE_MB_TYPE_BACKWARD 0x40
#define CANDIDATE_MB_TYPE_BIDIR 0x80
#define CANDIDATE_MB_TYPE_INTER_I 0x100
#define CANDIDATE_MB_TYPE_FORWARD_I 0x200
#define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
#define CANDIDATE_MB_TYPE_BIDIR_I 0x800
#define CANDIDATE_MB_TYPE_DIRECT0 0x1000
int block_index[6]; ///< index to current MB in block based arrays with edges
int block_wrap[6];
uint8_t *dest[3];
int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
/** matrix transmitted in the bitstream */
uint16_t intra_matrix[64];
uint16_t chroma_intra_matrix[64];
uint16_t inter_matrix[64];
uint16_t chroma_inter_matrix[64];
#define QUANT_BIAS_SHIFT 8
int intra_quant_bias; ///< bias for the quantizer
int inter_quant_bias; ///< bias for the quantizer
int min_qcoeff; ///< minimum encodable coefficient
int max_qcoeff; ///< maximum encodable coefficient
int ac_esc_length; ///< num of bits needed to encode the longest esc
uint8_t *intra_ac_vlc_length;
uint8_t *intra_ac_vlc_last_length;
uint8_t *inter_ac_vlc_length;
uint8_t *inter_ac_vlc_last_length;
uint8_t *luma_dc_vlc_length;
#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
int coded_score[8];
/** precomputed matrix (combine qscale and DCT renorm) */
int (*q_intra_matrix)[64];
int (*q_inter_matrix)[64];
/** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
uint16_t (*q_intra_matrix16)[2][64];
uint16_t (*q_inter_matrix16)[2][64];
/* noise reduction */
int (*dct_error_sum)[64];
int dct_count[2];
uint16_t (*dct_offset)[64];
void *opaque; ///< private data for the user
/* bit rate control */
int64_t total_bits;
int frame_bits; ///< bits used for the current frame
int next_lambda; ///< next lambda used for retrying to encode a frame
RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
/* statistics, used for 2-pass encoding */
int mv_bits;
int header_bits;
int i_tex_bits;
int p_tex_bits;
int i_count;
int f_count;
int b_count;
int skip_count;
int misc_bits; ///< cbp, mb_type
int last_bits; ///< temp var used for calculating the above vars
/* error concealment / resync */
int resync_mb_x; ///< x position of last resync marker
int resync_mb_y; ///< y position of last resync marker
GetBitContext last_resync_gb; ///< used to search for the next resync marker
int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
int err_recognition;
ParseContext parse_context;
/* H.263 specific */
int gob_index;
int obmc; ///< overlapped block motion compensation
int mb_info; ///< interval for outputting info about mb offsets as side data
int prev_mb_info, last_mb_info;
uint8_t *mb_info_ptr;
int mb_info_size;
/* H.263+ specific */
int umvplus; ///< == H263+ && unrestricted_mv
int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
int h263_slice_structured;
int alt_inter_vlc; ///< alternative inter vlc
int modified_quant;
int loop_filter;
int custom_pcf;
/* mpeg4 specific */
///< number of bits to represent the fractional part of time (encoder only)
int time_increment_bits;
int last_time_base;
int time_base; ///< time in seconds of last I,P,S Frame
int64_t time; ///< time of current frame
int64_t last_non_b_time;
uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
uint16_t pb_time; ///< time distance between the last b and p,s,i frame
uint16_t pp_field_time;
uint16_t pb_field_time; ///< like above, just for interlaced
int real_sprite_warping_points;
int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
int mcsel;
int quant_precision;
int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
int aspect_ratio_info; //FIXME remove
int sprite_warping_accuracy;
int data_partitioning; ///< data partitioning flag from header
int partitioned_frame; ///< is current frame partitioned
int low_delay; ///< no reordering needed / has no b-frames
int vo_type;
int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
PutBitContext tex_pb; ///< used for data partitioned VOPs
PutBitContext pb2; ///< used for data partitioned VOPs
int mpeg_quant;
int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
/* divx specific, used to workaround (many) bugs in divx5 */
int divx_packed;
uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
int bitstream_buffer_size;
unsigned int allocated_bitstream_buffer_size;
/* RV10 specific */
int rv10_version; ///< RV10 version: 0 or 3
int rv10_first_dc_coded[3];
int orig_width, orig_height;
/* MJPEG specific */
struct MJpegContext *mjpeg_ctx;
/* MSMPEG4 specific */
int mv_table_index;
int rl_table_index;
int rl_chroma_table_index;
int dc_table_index;
int use_skip_mb_code;
int slice_height; ///< in macroblocks
int first_slice_line; ///< used in mpeg4 too to handle resync markers
int flipflop_rounding;
int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
int per_mb_rl_table;
int esc3_level_length;
int esc3_run_length;
/** [mb_intra][isChroma][level][run][last] */
int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
int inter_intra_pred;
int mspel;
/* decompression specific */
GetBitContext gb;
/* Mpeg1 specific */
int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
int last_mv_dir; ///< last mv_dir, used for b frame encoding
uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
/* MPEG-2-specific - I wished not to have to support this mess. */
int progressive_sequence;
int mpeg_f_code[2][2];
int picture_structure;
/* picture type */
#define PICT_TOP_FIELD 1
#define PICT_BOTTOM_FIELD 2
#define PICT_FRAME 3
int intra_dc_precision;
int frame_pred_frame_dct;
int top_field_first;
int concealment_motion_vectors;
int q_scale_type;
int intra_vlc_format;
int alternate_scan;
int repeat_first_field;
int chroma_420_type;
int chroma_format;
#define CHROMA_420 1
#define CHROMA_422 2
#define CHROMA_444 3
int chroma_x_shift;//depend on pix_format, that depend on chroma_format
int chroma_y_shift;
int progressive_frame;
int full_pel[2];
int interlaced_dct;
int first_field; ///< is 1 for the first field of a field picture 0 otherwise
int drop_frame_timecode; ///< timecode is in drop frame format.
int scan_offset; ///< reserve space for SVCD scan offset user data.
/* RTP specific */
int rtp_mode;
uint8_t *ptr_lastgob;
int16_t (*pblocks[12])[64];
int16_t (*block)[64]; ///< points to one of the following blocks
int16_t (*blocks)[8][64]; // for HQ mode we need to keep the best block
int (*decode_mb)(struct MpegEncContext *s, int16_t block[6][64]); // used by some codecs to avoid a switch()
#define SLICE_OK 0
#define SLICE_ERROR -1
#define SLICE_END -2 ///<end marker found
#define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
int16_t *block/*align 16*/, int n, int qscale);
void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
int16_t *block/*align 16*/, int n, int qscale);
void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
int16_t *block/*align 16*/, int n, int qscale);
void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
int16_t *block/*align 16*/, int n, int qscale);
void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
int16_t *block/*align 16*/, int n, int qscale);
void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
int16_t *block/*align 16*/, int n, int qscale);
void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
int16_t *block/*align 16*/, int n, int qscale);
void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
int16_t *block/*align 16*/, int n, int qscale);
void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
int16_t *block/*align 16*/, int n, int qscale);
void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
int16_t *block/*align 16*/, int n, int qscale);
int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
int mpv_flags; ///< flags set by private options
int quantizer_noise_shaping;
/* temp buffers for rate control */
float *cplx_tab, *bits_tab;
/* flag to indicate a reinitialization is required, e.g. after
* a frame size change */
int context_reinit;
ERContext er;
int error_rate;
/* temporary frames used by b_frame_strategy = 2 */
AVFrame *tmp_frames[MAX_B_FRAMES + 2];
} MpegEncContext;
#define REBASE_PICTURE(pic, new_ctx, old_ctx) \
((pic && pic >= old_ctx->picture && \
pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
&new_ctx->picture[pic - old_ctx->picture] : NULL)
/* mpegvideo_enc common options */
#define FF_MPV_FLAG_SKIP_RD 0x0001
#define FF_MPV_FLAG_STRICT_GOP 0x0002
#define FF_MPV_FLAG_QP_RD 0x0004
#define FF_MPV_FLAG_CBP_RD 0x0008
#define FF_MPV_OFFSET(x) offsetof(MpegEncContext, x)
#define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
#define FF_MPV_COMMON_OPTS \
{ "mpv_flags", "Flags common for all mpegvideo-based encoders.", FF_MPV_OFFSET(mpv_flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "mpv_flags" },\
{ "skip_rd", "RD optimal MB level residual skipping", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_SKIP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
{ "strict_gop", "Strictly enforce gop size", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_STRICT_GOP }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
{ "qp_rd", "Use rate distortion optimization for qp selection", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_QP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
{ "cbp_rd", "use rate distortion optimization for CBP", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_CBP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
{ "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
{ "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
{ "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
{ "error_rate", "Simulate errors in the bitstream to test error concealment.", \
FF_MPV_OFFSET(error_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },
extern const AVOption ff_mpv_generic_options[];
#define FF_MPV_GENERIC_CLASS(name) \
static const AVClass name ## _class = {\
.class_name = #name " encoder",\
.item_name = av_default_item_name,\
.option = ff_mpv_generic_options,\
.version = LIBAVUTIL_VERSION_INT,\
};
/**
* Set the given MpegEncContext to common defaults (same for encoding
* and decoding). The changed fields will not depend upon the prior
* state of the MpegEncContext.
*/
void ff_MPV_common_defaults(MpegEncContext *s);
void ff_MPV_decode_defaults(MpegEncContext *s);
int ff_MPV_common_init(MpegEncContext *s);
int ff_MPV_common_frame_size_change(MpegEncContext *s);
void ff_MPV_common_end(MpegEncContext *s);
void ff_MPV_decode_mb(MpegEncContext *s, int16_t block[12][64]);
int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
void ff_MPV_frame_end(MpegEncContext *s);
int ff_MPV_encode_init(AVCodecContext *avctx);
int ff_MPV_encode_end(AVCodecContext *avctx);
int ff_MPV_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet);
void ff_MPV_encode_init_x86(MpegEncContext *s);
void ff_MPV_common_init_x86(MpegEncContext *s);
void ff_MPV_common_init_arm(MpegEncContext *s);
void ff_MPV_common_init_ppc(MpegEncContext *s);
void ff_clean_intra_table_entries(MpegEncContext *s);
void ff_draw_horiz_band(AVCodecContext *avctx, DSPContext *dsp, Picture *cur,
Picture *last, int y, int h, int picture_structure,
int first_field, int low_delay,
int v_edge_pos, int h_edge_pos);
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
void ff_mpeg_flush(AVCodecContext *avctx);
void ff_print_debug_info(MpegEncContext *s, Picture *p);
void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
int ff_find_unused_picture(MpegEncContext *s, int shared);
void ff_denoise_dct(MpegEncContext *s, int16_t *block);
int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
int ff_MPV_lowest_referenced_row(MpegEncContext *s, int dir);
void ff_MPV_report_decode_progress(MpegEncContext *s);
int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
void ff_set_qscale(MpegEncContext * s, int qscale);
void ff_mpeg_er_frame_start(MpegEncContext *s);
int ff_dct_common_init(MpegEncContext *s);
void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
void ff_init_block_index(MpegEncContext *s);
void ff_MPV_motion(MpegEncContext *s,
uint8_t *dest_y, uint8_t *dest_cb,
uint8_t *dest_cr, int dir,
uint8_t **ref_picture,
op_pixels_func (*pix_op)[4],
qpel_mc_func (*qpix_op)[16]);
/**
* Allocate a Picture.
* The pixels are allocated/set by calling get_buffer() if shared = 0.
*/
int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
extern const enum AVPixelFormat ff_pixfmt_list_420[];
/**
* permute block according to permuatation.
* @param last last non zero element in scantable order
*/
void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last);
static inline void ff_update_block_index(MpegEncContext *s){
const int block_size = 8;
s->block_index[0]+=2;
s->block_index[1]+=2;
s->block_index[2]+=2;
s->block_index[3]+=2;
s->block_index[4]++;
s->block_index[5]++;
s->dest[0]+= 2*block_size;
s->dest[1]+= block_size;
s->dest[2]+= block_size;
}
static inline int get_bits_diff(MpegEncContext *s){
const int bits= put_bits_count(&s->pb);
const int last= s->last_bits;
s->last_bits = bits;
return bits - last;
}
static inline int ff_h263_round_chroma(int x){
static const uint8_t h263_chroma_roundtab[16] = {
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
};
return h263_chroma_roundtab[x & 0xf] + (x >> 3);
}
/* motion_est.c */
void ff_estimate_p_frame_motion(MpegEncContext * s,
int mb_x, int mb_y);
void ff_estimate_b_frame_motion(MpegEncContext * s,
int mb_x, int mb_y);
int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
void ff_fix_long_p_mvs(MpegEncContext * s);
void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
int16_t (*mv_table)[2], int f_code, int type, int truncate);
int ff_init_me(MpegEncContext *s);
int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
int ref_mv_scale, int size, int h);
int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
int ref_index, int size, int h, int add_rate);
/* mpeg12.c */
extern const uint8_t ff_mpeg1_dc_scale_table[128];
extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
void ff_mpeg1_encode_mb(MpegEncContext *s,
int16_t block[6][64],
int motion_x, int motion_y);
void ff_mpeg1_encode_init(MpegEncContext *s);
void ff_mpeg1_encode_slice_header(MpegEncContext *s);
extern const uint8_t ff_aic_dc_scale_table[32];
extern const uint8_t ff_h263_chroma_qscale_table[32];
/* rv10.c */
void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number);
int ff_rv_decode_dc(MpegEncContext *s, int n);
void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number);
/* msmpeg4.c */
void ff_msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
void ff_msmpeg4_encode_ext_header(MpegEncContext * s);
void ff_msmpeg4_encode_mb(MpegEncContext * s,
int16_t block[6][64],
int motion_x, int motion_y);
int ff_msmpeg4_decode_picture_header(MpegEncContext * s);
int ff_msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
int ff_msmpeg4_decode_init(AVCodecContext *avctx);
void ff_msmpeg4_encode_init(MpegEncContext *s);
int ff_wmv2_decode_picture_header(MpegEncContext * s);
int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
void ff_mspel_motion(MpegEncContext *s,
uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
int motion_x, int motion_y, int h);
int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
void ff_wmv2_encode_mb(MpegEncContext * s,
int16_t block[6][64],
int motion_x, int motion_y);
int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src);
void ff_mpeg_unref_picture(MpegEncContext *s, Picture *picture);
void ff_free_picture_tables(Picture *pic);
#endif /* AVCODEC_MPEGVIDEO_H */
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